Cheng is a practicing physician with offices in USA and Shanghai, China, integrating conventional medicine with anti-aging medicine, orthomolecular medicine, and functional medicine. Cheng is also a public educator and international public speaker with frequent media interviews including China Global TV Network and US media on health and medicine. Cheng also has numerous publications on health and medicine. Cheng graduated from Shanghai Medical University and received his medical residency and subspecialty training from Shanghai Medical University, the University of Arkansas for Medical Sciences (UAMS), and the National Cancer Institute, National Institutes of Health (Bethesda, MD). Cheng also received a Ph.D. in biochemistry/Molecular Biology from UAMS. After serving in the Boston, MA biotech industry and serving as dept chief at USA MACH hospital, Cheng has been enthusiastic and engaged full-time in anti-aging/functional/orthomolecular for over a decade.